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P0525 is a diagnostic trouble code (DTC) for "Cruise Control Servo Control Circuit Range/Performance". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
P0525 OBD-II Trouble Code: Cruise Control Servo Control Circuit Range/Performance
The P0525 code indicates that the PCM has detected a malfunction in the cruise control servo control circuit.
The PCM is part of the system that assists the cruise control in controlling vehicle speed. If the PCM detects an issue with the cruise control based on the voltage reading from the servo control circuit, it will run a self-instituted test of the system. If there is an abnormal result for the voltage/resistance level within the cruise control servo control circuit, it will store this code.
The most likely cause of an abnormal voltage/resistance level in the cruise control servo control circuit is a failed servo control unit.
Other causes may include:
In most cases, the cruise control will stop working when the P0525 code is present. The Check Engine Light will illuminate within two to three drive cycles after the PCM has detected the issue.
After an OBD-II scanner detects the P0525 code, a technician should begin with a visual inspection of all the wiring, connectors, and other components of the cruise control system. After repairing any issues, or replacing any damaged elements, they should then clear the code and perform a test drive, checking that the cruise control works as it should, and that the code does not reappear.
The most common mistake made when diagnosing the P0525 code is to neglect to check for blown fuses. If a part is replaced, but a blown fuse is not repaired, it could cause the replacement part to fail very quickly.
If the P0525 code is being detected, a vehicle will still be drivable. The cruise control may not be usable, but this should not affect any other function of the vehicle. However, if a fuse is blown, there may be some electrical issues, such as the inability to use the turn signal, which could make the vehicle unsafe to operate. With this code stored in the PCM, the vehicle may be unable to pass an emissions test.
There are many ways that a technician can address a P0525 code detection. They include:
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